ca.odell.glazedlists.impl.matchers.NotNullMatcher Maven / Gradle / Ivy
/* Glazed Lists (c) 2003-2006 */
/* http://publicobject.com/glazedlists/ publicobject.com,*/
/* O'Dell Engineering Ltd.*/
package ca.odell.glazedlists.impl.matchers;
import ca.odell.glazedlists.matchers.Matcher;
/**
* A simple {@link Matcher} implementation that only matches non-null objects.
*
* @author James Lemieux
*/
public final class NotNullMatcher implements Matcher {
/** Singleton instance of NotNullMatcher. */
private static final Matcher INSTANCE = new NotNullMatcher();
private NotNullMatcher() {}
/**
* Return a singleton instance.
*/
public static Matcher getInstance() {
return INSTANCE;
}
/** {@inheritDoc} */
@Override
public boolean matches(E item) {
return item != null;
}
/** {@inheritDoc} */
@Override
public String toString() {
return "[NotNullMatcher]";
}
}